# netlink: avoid hashing the network namespace pointer

CVE record · `CVE-2026-99201`

- **Identifiers:** `CVE-2026-99201`
- **State:** Confirmed
- **Severity:** No CVSS score
- **Critical:** No
- **CNA:** Linux
- **Technologies:** [Linux kernel](https://agentprime.io/advisories/technology/linux-kernel.md)
- **Published:** 28 Oct 2026
- **Updated:** 30 Oct 2026
- **Reviewed by a person:** No

Published by the CVE Program (CNA: Linux) at 28 Oct 2026, 10:35 UTC. agentprime has not analysed this yet, so whether it affects any app is not known. This CVE names a vendor and product rather than a package, so the lockfile check doesn’t match it.

## Affected products, as the CNA wrote them

- Vendor: Linux. Product: Linux.
  - affected: `c428ecd1a21f1457ca3beb4df71b8a079c410e41 to before c61431f3b8c9824e9848a0308054f92b27fa7794` (git)
  - affected: `c428ecd1a21f1457ca3beb4df71b8a079c410e41 to before f8d2690f3c5dfad1fc306f6d5d84a1d3176c3af9` (git)
  - affected: `c428ecd1a21f1457ca3beb4df71b8a079c410e41 to before c03fb9c4be3b2dd0996d91e54f65407f7f475238` (git)
  - affected: `c428ecd1a21f1457ca3beb4df71b8a079c410e41 to before 41a2f69f091b0765f17890d8ac04852c12f25cf6` (git)
  - affected: `c428ecd1a21f1457ca3beb4df71b8a079c410e41 to before 18edcb9945118beb7a1b64a31a7370ecab485a79` (git)
  - affected: `c428ecd1a21f1457ca3beb4df71b8a079c410e41 to before bdd55b8a8acbf6b4840ab420eb6a63774bf4593b` (git)
  - affected: `c428ecd1a21f1457ca3beb4df71b8a079c410e41 to before 078deff25f8a849ecd1c3fe17b1e473b1cf44f28` (git)
  - affected: `c428ecd1a21f1457ca3beb4df71b8a079c410e41 to before f88bb3606e4bd11ee035b682cddc2999e604609a` (git)
  - Other versions: unaffected
- Vendor: Linux. Product: Linux.
  - affected: `4.1`
  - unaffected: `before 4.1` (semver)
  - unaffected: `5.10.273 to 5.10.*, inclusive` (semver)
  - unaffected: `5.15.224 to 5.15.*, inclusive` (semver)
  - unaffected: `6.1.191 to 6.1.*, inclusive` (semver)
  - unaffected: `6.6.161 to 6.6.*, inclusive` (semver)
  - unaffected: `6.12.115 to 6.12.*, inclusive` (semver)
  - unaffected: `6.18.59 to 6.18.*, inclusive` (semver)
  - unaffected: `7.2.13 to 7.2.*, inclusive` (semver)
  - unaffected: `7.3 to *, inclusive` (original_commit_for_fix)
  - Other versions: affected

## Not analysed yet

We haven’t published our own analysis of this CVE. If a person reviews it, this page will say what’s affected and what has to be true for it to matter.

## Severity and exploitation

No source has published a CVSS score for this record yet.

- **CISA KEV:** Not listed.
- **EPSS:** 0.0017, the 6th percentile, on 5 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

## Timeline

This record came from the full history of the CVE Program, published 28 Oct 2026. New records show when each source confirmed them.

## Sources

- [CVE List: CVE-2026-99201](https://www.cve.org/CVERecord?id=CVE-2026-99201)
- [NVD: CVE-2026-99201](https://nvd.nist.gov/vuln/detail/CVE-2026-99201)

### References from the CNA

- <https://git.kernel.org/stable/c/c61431f3b8c9824e9848a0308054f92b27fa7794>
- <https://git.kernel.org/stable/c/f8d2690f3c5dfad1fc306f6d5d84a1d3176c3af9>
- <https://git.kernel.org/stable/c/c03fb9c4be3b2dd0996d91e54f65407f7f475238>
- <https://git.kernel.org/stable/c/41a2f69f091b0765f17890d8ac04852c12f25cf6>
- <https://git.kernel.org/stable/c/18edcb9945118beb7a1b64a31a7370ecab485a79>
- <https://git.kernel.org/stable/c/bdd55b8a8acbf6b4840ab420eb6a63774bf4593b>
- <https://git.kernel.org/stable/c/078deff25f8a849ecd1c3fe17b1e473b1cf44f28>
- <https://git.kernel.org/stable/c/f88bb3606e4bd11ee035b682cddc2999e604609a>

Facts on this page come from the CVE List as the CNA published them, with CVSS from the sources named above, CISA KEV and FIRST EPSS. Vendors, products and versions are shown as the CNA wrote them. We don’t reproduce the CVE’s description.

## Check whether this affects you

This CVE names a vendor and product rather than a package, so the lockfile check doesn’t match it. Compare the affected versions above with what you run.

- With the agentprime MCP server (<https://api.agentprime.io/mcp>), `get_advisory` returns this record and `search_advisories` finds related ones. Setup: <https://agentprime.io/mcp.md>
- As JSON: <https://api.agentprime.io/v1/advisories/CVE-2026-99201>
- Everything that needs attention now: <https://agentprime.io/advisories/critical.md>

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The web page: <https://agentprime.io/advisories/CVE-2026-99201/>. Everything for agents: <https://agentprime.io/llms.txt>.